Re: EMC steps/rev calibration

Hi Andy,

Seems like you might have had a similar experience. When I first setup
jumpers on a G901 board (installed in my G201, same goes for G340), I
misread the instructions, and got a 5x instead of a 2x I wanted. I
figured it out by swapping jumpers until I got the rate I expected.
Rereading the documentation again, I saw another way it could be read.

In fact, I'm still trying to figure out what would be the best "X" for
minimizing the effects of an uneven pulse stream. Let the Gecko "use
up" my irregular stepping interval with microsteps?

Alan KM6VV


andyolney wrote:

>
> I think that the documentation was incorrect on the original G340s.
> Might try changing the jumper to see. Andy
>
> --- In CAD_CAM_EDM_DRO@y..., "nahydro" <r_fl_z@h...> wrote:
> > Alan:
> >
> > Thanks for trying to help. Unfortunately, that is not the
> problem.
> > I've repeatedly checked the jumpers on the Geckos, and if the
> > documentation is correct, I believe I have them set correctly for x5
> > (second jumper position).
> >
> > r
> >
> > --- In CAD_CAM_EDM_DRO@y..., Alan Marconett KM6VV <KM6VV@a...>
> wrote:
> > > Hi Nahydro,
> > >
> > > Perhaps you're actually setting x2 instead of x5 on the Gecko?
> > >
> > > Alan KM6VV
> > >
> > >
> > > nahydro wrote:
> > > >
> > > > I'm getting about half of the motor revs per inch of travel
> that I
> > > > want, and can't figure out why.
> > > >
> > > > My setup: EMC with 5 tpi screw, 1024 cpr encoder, and G340's in
> x5
> > > > mode.
> > > >
> > > > I have INPUT_SCALE = 1024 0 and OUTPUT_SCALE = 1 0.
> > > >
> > > > When I jog 1 inch (any axis) I get about 2.5 motor shaft
> > rotations. I
> > > > expect 5.
> > > >
> > > > Any ideas? TIA
> > > >
> > > > r